{"id":"CVE-2023-5135","aliases":["EUVD-2023-57473","GHSA-rj9v-45x6-hwjj"],"status":"published","title":"Simple Cloudflare Turnstile \u003c= 1.23.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","description":"The Simple Cloudflare Turnstile plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'gravity-simple-turnstile' shortcode in versions up to, and including, 1.23.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00744,"percentile":0.5503,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2023-09-26T01:51:14Z","modified":"2026-06-17T06:47:36Z","products":[{"vendor":"elliotvs","product":"simple captcha alternative with cloudflare turnstile"},{"vendor":"replywp","product":"simple_cloudfare_turnstile"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/91f6c9d3-641d-42f7-bf11-e3c3a44eeb76?source=cve","tags":["x_transferred","Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.23.0/inc/integrations/forms/gravity-forms.php#L14","tags":["x_transferred","Exploit"]},{"url":"https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.23.0/inc/integrations/forms/gravity-forms.php#L23","tags":["x_transferred","Exploit"]},{"url":"https://plugins.trac.wordpress.org/browser/simple-cloudflare-turnstile/tags/1.23.0/simple-cloudflare-turnstile.php#L72","tags":["x_transferred","Exploit"]},{"url":"https://plugins.trac.wordpress.org/changeset/2970368/simple-cloudflare-turnstile#file1","tags":["x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5135"},{"url":"https://github.com/advisories/GHSA-rj9v-45x6-hwjj"}],"sources":{"cve":[{"id":"CVE-2023-5135","title":"Simple Cloudflare Turnstile \u003c= 1.23.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","description":"The Simple Cloudflare Turnstile plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'gravity-simple-turnstile' shortcode in versions up to, and including, 1.23.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2023-09-26T01:51:14.743Z","modified":"2026-04-08T17:09:20.198Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:16.771348Z"}],"euvd":[{"id":"EUVD-2023-57473","description":"The Simple Cloudflare Turnstile plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'gravity-simple-turnstile' shortcode in versions up to, and including, 1.23.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2023-09-26T01:51:14Z","modified":"2026-04-08T17:09:20Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:49.380512Z"}],"ghsa":[{"id":"GHSA-rj9v-45x6-hwjj","title":"The Simple Cloudflare Turnstile plugin for WordPress is vulnerable to Stored Cross-Site Scripting...","description":"The Simple Cloudflare Turnstile plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'gravity-simple-turnstile' shortcode in versions up to, and including, 1.23.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2023-09-27T15:30:39Z","modified":"2024-04-04T07:55:50Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:56:55.990291Z"}],"nvd":[{"id":"CVE-2023-5135","description":"The Simple Cloudflare Turnstile plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'gravity-simple-turnstile' shortcode in versions up to, and including, 1.23.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2023-09-27T15:19:41.693Z","modified":"2026-06-17T06:47:36.783Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:08:31.699785Z"}]}}